Bathtub



FIG. 1 is a perspective view of the top, front and right side of a bathtub showing our new design;

FIG. 2 is a front view thereof, the rear view being mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof, the left side view being mirror image thereof; and,

FIG. 6 is a cross sectional view at 6—6 thereof. 

The ornamental design for a bathtub, as shown and described. 